Lyndon Johnson actually said...
Pursuant to section 3 (b) of the Joint Resolution, the amendments to the Tariff Schedules of the United States made by section 3 (a) of the Joint Resolution shall apply with respect to articles entered, or withdrawn from warehouse, for consumption, on and after January 1, 1967.
Context
Executive Order 11311—Carrying out Provisions of the Beirut Agreement of 1948 Relating to Audio-Visual Materials
10/13/1966